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/*
* Copyright 2014 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include <linux/firmware.h>
#include "drmP.h"
#include "amdgpu.h"
#include "tonga_smum.h"
MODULE_FIRMWARE("amdgpu/tonga_smc.bin");
static void tonga_dpm_set_funcs(struct amdgpu_device *adev);
static int tonga_dpm_early_init(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
tonga_dpm_set_funcs(adev);
return 0;
}
static int tonga_dpm_init_microcode(struct amdgpu_device *adev)
{
char fw_name[30] = "amdgpu/tonga_smc.bin";
int err;
err = request_firmware(&adev->pm.fw, fw_name, adev->dev);
if (err)
goto out;
err = amdgpu_ucode_validate(adev->pm.fw);
out:
if (err) {
DRM_ERROR("Failed to load firmware \"%s\"", fw_name);
release_firmware(adev->pm.fw);
adev->pm.fw = NULL;
}
return err;
}
static int tonga_dpm_sw_init(void *handle)
{
int ret;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
ret = tonga_dpm_init_microcode(adev);
if (ret)
return ret;
return 0;
}
static int tonga_dpm_sw_fini(void *handle)
{
return 0;
}
static int tonga_dpm_hw_init(void *handle)
{
int ret;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
mutex_lock(&adev->pm.mutex);
/* smu init only needs to be called at startup, not resume.
* It should be in sw_init, but requires the fw info gathered
* in sw_init from other IP modules.
*/
ret = tonga_smu_init(adev);
if (ret) {
DRM_ERROR("SMU initialization failed\n");
goto fail;
}
ret = tonga_smu_start(adev);
if (ret) {
DRM_ERROR("SMU start failed\n");
goto fail;
}
mutex_unlock(&adev->pm.mutex);
return 0;
fail:
adev->firmware.smu_load = false;
mutex_unlock(&adev->pm.mutex);
return -EINVAL;
}
static int tonga_dpm_hw_fini(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
mutex_lock(&adev->pm.mutex);
/* smu fini only needs to be called at teardown, not suspend.
* It should be in sw_fini, but we put it here for symmetry
* with smu init.
*/
tonga_smu_fini(adev);
mutex_unlock(&adev->pm.mutex);
return 0;
}
static int tonga_dpm_suspend(void *handle)
{
return 0;
}
static int tonga_dpm_resume(void *handle)
{
int ret;
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
mutex_lock(&adev->pm.mutex);
ret = tonga_smu_start(adev);
if (ret) {
DRM_ERROR("SMU start failed\n");
goto fail;
}
fail:
mutex_unlock(&adev->pm.mutex);
return ret;
}
static int tonga_dpm_set_clockgating_state(void *handle,
enum amd_clockgating_state state)
{
return 0;
}
static int tonga_dpm_set_powergating_state(void *handle,
enum amd_powergating_state state)
{
return 0;
}
const struct amd_ip_funcs tonga_dpm_ip_funcs = {
.early_init = tonga_dpm_early_init,
.late_init = NULL,
.sw_init = tonga_dpm_sw_init,
.sw_fini = tonga_dpm_sw_fini,
.hw_init = tonga_dpm_hw_init,
.hw_fini = tonga_dpm_hw_fini,
.suspend = tonga_dpm_suspend,
.resume = tonga_dpm_resume,
.is_idle = NULL,
.wait_for_idle = NULL,
.soft_reset = NULL,
.print_status = NULL,
.set_clockgating_state = tonga_dpm_set_clockgating_state,
.set_powergating_state = tonga_dpm_set_powergating_state,
};
static const struct amdgpu_dpm_funcs tonga_dpm_funcs = {
.get_temperature = NULL,
.pre_set_power_state = NULL,
.set_power_state = NULL,
.post_set_power_state = NULL,
.display_configuration_changed = NULL,
.get_sclk = NULL,
.get_mclk = NULL,
.print_power_state = NULL,
.debugfs_print_current_performance_level = NULL,
.force_performance_level = NULL,
.vblank_too_short = NULL,
.powergate_uvd = NULL,
};
static void tonga_dpm_set_funcs(struct amdgpu_device *adev)
{
if (NULL == adev->pm.funcs)
adev->pm.funcs = &tonga_dpm_funcs;
}
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